15" Powerbook shipment delayed

Hey everyone. I ordered a 15" Powerbook (1.25ghz) sans superdrive, 60GB HD, 1x512 DIMM. I ordered on the 19th, and it was supposed to ship the 23rd. It was just pushed back to the 30th. Anyone have a clue why? At that point I'm so close to the expo perhaps I'd be better to wait? When is that thing anyway?

If I get it on the 30th and they announce something hugely new at the expo, do I have a chance of returning it? Is it by the date received or the ship date? How many days to I have to return it if I don't like it?

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